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Finding the Fourth Proportional to 521,653.10, 782,479.65 and 433,079.60

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Solution

The fourth proportional to 521,653.10, 782,479.65 and 433,079.60 is: 649,619.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,653.10 : 782,479.65 = 433,079.60 : x
  2. Step 2: Convert to fraction form
    521,653.10/782,479.65 = 433,079.60/x
  3. Step 3: Cross multiply
    521,653.10x = 782,479.65 × 433,079.60
  4. Step 4: Simplify right side
    521,653.10x = 338,875,973,830.14
  5. Step 5: Solve for x
    x = 338,875,973,830.14/521,653.10
  6. Step 6: Final answer
    x = 649,619.40

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.